Marathon volunteers

Marathon volunteers

Peter Nickeas, Chicago Tribune

Russell Karas, 16, left, and Robert Perez, 17, right, both of Lombard, prepare a table of water for runners in the Bank of American Chicago Marathon on North LaSalle Street between West Ontario Street and West Erie Street

Russell Karas, 16, left, and Robert Perez, 17, right, both of Lombard, prepare a table of water for runners in the Bank of American Chicago Marathon on North LaSalle Street between West Ontario Street and West Erie Street (Peter Nickeas, Chicago Tribune)

Russell Karas, 16, left, and Robert Perez, 17, right, both of Lombard, prepare a table of water for runners in the Bank of American Chicago Marathon on North LaSalle Street between West Ontario Street and West Erie Street